Quick application and release valve



July 26,1927. .636.769

P. R. FORMAN QUICK APPLICATION AND RELEASE VALVE Filed Jan. 20. 1926. 3Sheets-Sheet l July 26,1927.

P. R. FORMAN QUICK APPLICATION AND RELEASE VALVE Filed Jan. 20. 1926 sSheets-Sheet 2 bweuboz i p W vm T NQ.

J y 1927- P. R. FoRMA-N QUICK APPLICATION AND RELEASE VALVE Filed Jan.20. 1926 3 Sheets-Sheet 3 Patented July 26, 1927.

U N "I TE D ST ATES PATENT orricn.

PARIS R. FOBMAZN, F RfAi-IWAY, NEW JERSEY, ABSIGNOR '10 NATIONALPNEUMATIC COMPANY, OF NEW YGRK, N. 'Y., A GORPORATION OF WEST VIRGINIA.

QUICK APPLICATION AND RELEASE Application filed January 20, 1926. Serialno. cacao.

This invention relates in general to a special form of valve for use inconnection with door opening apparatus and vehicles of the type ofstreet railway and subway trains.

One of the objects of this invention is the provision of aspecial formof valve means of which it is possible upon the application of thebrakes to supply fluid pressure to the door control devices.

0 Another object of my invention is the production of a new and novelvalve which is simple and cheap to construct, and eflicient in operationand maintenance.

This invention resides substantially in the combination, construction,arrangement and relative location of parts, all as may .be more fullyhereinafter disclosed.

Referring to the drawings in which the same reference numerals will beused throughout the several views to indicate the same parts, Fig. 1 isa central longitudinal,

cross-sectional view ofa valve employing the principles of my invention.

Fig. 2 is a top plan View of this valve shown partly in -cross-section.

Fig. 3 is a central longitudinal cross-sectional View of anotherembodiment on the line 33 of Fig. 5 looking in the direction of thearrows.

Fig. 4 is a top plan view of the construction with parts broken away.

, 5 is a side elevational View of the valve of F ig. 3. I

Fig. 6 is a cross-sectional view taken on the line '6-6 of Fig. 7looking in the. direction of the arrows, and is a still furthermodification of my invention.

7 is a side elevational view of this construction.

Fig. 8 is an end elevational view of the same construction.

Fig. 9 is an arrangement showing the use of a valve embodying theprinciples of my invention in :a braking system.

In order that the pneumatic door opening system of a vehicle may be made.as .safeas possible, it is necessary that the system be so constructed,that the doors cannot be opened when the car is in motion, and when tainthis feature, I have produced a special form of valve constructionwhereby it is the brakes are not applied. In order .to at-.'extendirrgwalls 1A.

ossible to 0 en the doors only after the rakes have lar forms of valvesdevised by me fluid pressure is fed from the door reservoir to. the doorengine control valves only-upon application of the fluid pressure to thebrakes, as will appear more fully in the specification As fluid pressureis fed to the brakes, it isalso led to the special form of valve devisedby me in such a manner that communication is established between the 11applied. In the particudoor opening reservoir and the door enginecontrol valves, so that upon movement of the door engine control valves,the doors may be opened, but only after the brakes have been applied.

vRefierring now to the drawings and more particularly to Figs. 1 and 2,one tor-m of my invention comprises .a hollow valve body 1, havingrigidly attaollred at one end a-cap member .2, by means of nuts andbolts 3.

At the other end of the body portion 1 is a 2 against the upper valvehead 13. This diamv phregm may be made of rubber, leather or othersuitable flexible .materiail, On

the plug 4 and extending, into the hollow.-

body member .1 is an integral projection 7 which serves to hold end ofthe 8 in central alignment. This spiing 8 forces a. valve head .9 havingtherein packing 10 against :a .seat 12. At 13 is another valve headhavingmounted thereon aseat 1 5 which cooperates with another seat 1.4The seats 12 and 14 surround the -.cenbra\l openings in transverselyextending walls 14 which closes ofi the interior of the hollow bodymember into several 'com-part-ments. The

two valve heads 9 and .13 are jointed by .a v

flnteds indlemembor 11. v

The" ate :Eorming ridges 19 form spaces 20, which permit ail-to pass bythe spindle 11 through the opening in the transversely Extending throughthe cap 2-at thecenter is 'athreaded opening l-6 which has mountedwithin it aprotectingcap 16. Extending through the side walls of themember 1 are two threaded openings 17 and 18.

The threaded opening 16 receives a pipe extending from the passageleading to the brake mechanism, so that upon application of fluidpressure to the brake system, pressure is applied to the upper side ofthe flexible diaphragm 6, which forces the valve head 13, member 11 andvalve head 9 downward so as to seat the valve head 13 on the seat 14,and unseat the valve head9 from its-seat 12. In doing this communicationis established between the threaded openings 17 and 18, so that fluidpressure'may be supplied from a suitable source to the control valvewhich operates the door opening mechanism. At 1 are a series of openingsextending through the wallsoii' the body member 1 to the atmosphere, sothat while the diaphragm 6 is forcing the valve head structure downward,the fluid pressure which is acting through the opening 17 'may 'beexhausted through the openings 1 in order not to oppose the downwardaction of the diaphragm 6.

Referring to Figs. 3, 4 and 5, Ishow a modification of my invention inwhich the valve structure is operated bymeans of a piston. The valvecomprises a hollow body 7 structure 21, having bolted to it at its upperend a hollowcap member 22 by means of nuts and bolts 23. Threaded ontothe lower end of the body member'l is a plug 24, which forms an airtight connection by means of the gasket 25. A similar gasket 26 isinterposed between the body member and the cap 22 to form an air tightconnection at this point. The cap member 24 has an inwardly extendingcentral lug 27 which forms an aligning support for the spring 28, whichnormally presses the valve head 29 and its packing 30 against the seat32. A similar valve head 33 with its packing 35 is connected to thevalve head 29 by means of a'fiuted spindle. 31 in such a manner thatwhen the valve head 29 is normally seated the valve head 33 will beraised off its seat 34. These seats 32 and 34 are formed on theperiphery of openings which extend through the transverse walls 24. At37 and 38 are threaded passages which extend through the walls ot thebody member 21. Formed integral with the valve head 33 is a shortthreaded stud 45, which has secured to it by means of the bolt 47 apiston 46. Mounted on the piston 46 is a leather or rubber cap washer,which'is' held in place by means of the metal iece 49, solid washer 50and split washer 51 w ich cooperate in conjunction with the nut 47 torigidly secure the piston structure to the valve head 33. Bolted to theupper end of thecap member 22 is a plate 42 which forms an air tightconnection by means of the gasket 41, and the clamping bolts 43. Ex-

tending through the plate 42 are two threaded openings 44 and 53, theopening 53 has a protecting cap 53 and the opening 44 has threaded intoit a plug 44. Extending through the wall of the body member 21 is aseries of openings 21, which connect the interior of the valve with theatmosphere; The operation of this valve issimilar to that previouslygiven except that in this case asthe brake fluid pressure is fed throughthe opening 53, pressure is exercised on the movable piston structure tounseat the normally seated valve head 29, and seat the normallyunseate'd valve head 33, to establish communication between the pipesconnected with the threaded openings 37 and 38. Referring now to Figures6, 7, and 8, wherein I have disclosed a more compact embodiment of myinventive idea it will be evident that as before I have provided ahollow body member 60 having attached at both ends by means of threadsthe caps 62 and 63'. Gaskets 63 and 64 form air tight joints at thesepoints of connection. Extending through the caps 62 and 63 are threadedopenings 66 and 65 respectively. The cap 62 has formed on its innersurface a depression 67 which receives one end of the spring 68, theother end of which presses against a valve head 69, having mountedthereon a packing 71 and extending through the walls thereof theopenings 70. The valve head 69 seats on the edge 72 formed'inte grallywith the body member. Another valve head 78 with its packing 79 seats onthe and 78 are rigidly secured to a short pin tions with the interior ofthe member 60 and the atmosphere. The piston end of the member 60 islined with a cylindrical casing 84, which may be of any desirable material to form a suitable cylinder wall. The operation of this valve issimilar to the two preceding ones.

As fluid pressure is supplied to the an brake line, it is also fed bymeans of a pipe, through the threaded opening 65 into thpiston cylinderto force the piston and with it the valve heads 69 and 78 to the left asshown in Figure 6, so as to unseat the valve head 69 against the actionof the spring68 and to seat the valve 78. By this operationcommunication is established be reservoir to 1 the valve which esa-"zooment of my improved valve in. a braking system; -The tank 90. is:thebrakerfluid pressure. reservoir, connected bypipe .93. to the 'brake'engines through control devices. The Eva-hie 96 is a brake safety valveof the usual typefo mdin theair brake line of vehicles. The valve 92which is the valve of my present.- invention .is connected. by pipe 97to the air .-brake,line 93. At? 91-isanother reservoir which visv usedto supply fluid: pressure to 1 the door. 2 opening engines a through 1the lines;- 95, .92 --.and.9 i.= When the-valve '96.is operated to}.allow: 1 fluid apressure. to; flow through :pipe 193 ztQ. the brake,engines, pressure. is applied 'to valve92: as describedbe- 4.Itz'willfube-evident tolione skilled ioref to ;al low; .pressure:.from.reservoir 91 to travel to t-hedooi engine control. devices. This systemcould-The. utilized if the same reservoir were used to; supply boththedoor en'giueaand the brake-engines.

the art that many modifications and changes in details. oiiconstructionwill readily suggest themselves, without involving invention, and I donot, therefore, desire to be limited to the structure shown by way ofillustration, but rather to the spirit and scope of my invention, as Idefine it in the appended claims.

What I claim, therefore, as new and useful, of my own invention, anddesire to secure by Letters Patent, is:

1. In a braking system the combination of a plurality of fluid pressuresources one of which is connected to the brake operating means and aquick application valve whereby fluid pressure is supplied to the doorcontrol valve from another of said sources when the brakes are applied.

2. In a braking system the combination of a pluralitv of fluid pressuresources one of which is connected to the brake operating means and avalve operated by the brake fluid pressure to release the fluid pressurefrom another of said sources whereby the doors may be opened by asuitable control device.

3. In a braking system the combination of a plurality of fluid pressuresources one of which is connected to the brake operating means and avalve operated by an application of the brakes to supply fluid pressureto the door opening control valves.

4C. In a braking system the combination of a plurality of fluid pressuresources and a fluid pressure operated valve whereby on application ofthe brakes fluid pressure is supplied to a door control valve, saidmeans includingaa. closedchamber having a fleas. "ible; Wall. i

A quickapplication and release valve comprising. a body portion havingan. inlet and outlet opening, a seatwithin said body portion and fluidpressure. operated means foruncovering said seat, said means. includingaclosedcnamber having a flexible. wall. 6.: A; quick application andrelease valve and outlet openinga valve head andv seat within saidbody;portion,.springmeans for holdingsaid. valve head on said seatandfluid pressure means. for unseating said head comprising a body portionhaving an inlet.

against-theaetionof said spring, said means including a. closed chamber.having a flexible 7. A quick application and release; valve comprising.a body portion having. an inlet andoutletopening. a plurality of seatsvwithin said body portion-,galhead normally held seated ononeof saidseatsand fluidpressure means for; unseating said head, saidzmeans including aclosed chamberhaving flexible wall. .j 1 Y 48. In aquick application-andrelease valve a hollow'bodymember having a plurality of threadedopenings, "a plurality; of. partitions within said member having.se'ats; thereon,

a plurality offvalve heads for said seats,

and means for unseating one head and seating the'other wherebycommunication 1s cstablished between said threaded openings,

said means including a closed chamber having a flexible wall.

9. In a quick application and release valve a hollow body member havinga plurality of threaded openings, a plurality of partitions within saidmember having seats thereon,-valve heads for'said seats, one of saidheads being normally seated and fluid pressure means for unseating saidnormally seated head and seating the other of said heads wherebycommunication is established between said threaded openings.

10. In a quick application and release valve, a hollow body memberhaving threaded openings therein, transversely extending walls withinsaid body member having seats thereon, valve heads for said seats joinedby a spindle member, one of said heads being normally held seated by aspring, andfluid pressure operatedmeans for unseating said normallyseated head and seating the other of said heads whereby communication isestablished between said threaded openings.

11. In a quick application and release valve, a hollow body memberhaving joined by a spindle member, one of said heads being normally heldseated by a spring, and fluid pressure operated means for unseating saidnormally seated head threaded openings;

12. In a quick application and release valve a hollow body member havingthreaded openings therein, cap members on the ends of said body memberforming a closed chamber, transverse walls Within said body memberhaving openings therein with seats on the edges of the openings, valveheads for said openings joined by a fluted member, a spring normallyholding one of said heads on its seat and the other off its seat andfluid pressure operated meansfor unseating said normally seated head andseating said normally unseated head whereby communication is establishedbetween said threaded openings.

13. In a quick application a and release valve a hollow body memberhaving threaded caps on its ends with threaded openings therein, seatswithin said body member, valve heads for said seats and piston operatedmeans forunseating one of said heads and seating the other of said headswhereby communication is established between an opening in' said body;member and the opening in one of the caps.

the unseated head so that on application of fluid pressure to saidpiston the valve head structure is moved to unseat one head and seat theother. v

15. In a quick application and release valve a hollow body memberhaving" threaded caps on.:its ends-with threaded openings therein seatswithin said body -member,t.valve heads for said seatssecured together,spring means for-holding one head seated and the otherunseated, apiston: attachedto the unseatedheadso that onapplication offluidpressure to said :piston the valve head structure is moved tounseat one head and seat the other, said:body having an exhaustopeningtherein."

In testimony *whereof I havexhereunto set my hand on this 14thday-otJanuary A. D.,-1926. a PARIS R; FORMAN.

